From a322f85b9162fad0914e57bb630b3ca6e53c1247 Mon Sep 17 00:00:00 2001
From: Yu Qiaowei <cerf.yu@rock-chips.com>
Date: Thu, 28 Jul 2022 20:22:51 +0800
Subject: [PATCH] video: rockchip: rga3: Fix compilation error on kernel-4.19

drivers/video/rockchip/rga3/rga_iommu.c:38:11: error: implicit declaration of function 'kmap' [-Werror=implicit-function-declaration]
   vaddr = kmap(pages[taipage_num - 1]);

Signed-off-by: Yu Qiaowei <cerf.yu@rock-chips.com>
Change-Id: I3f570c4812f4c308001cdd894799682faa18203e
---
 drivers/video/rockchip/rga3/include/rga_drv.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/video/rockchip/rga3/include/rga_drv.h b/drivers/video/rockchip/rga3/include/rga_drv.h
index 2eed12de4c10..dd312d098c9b 100644
--- a/drivers/video/rockchip/rga3/include/rga_drv.h
+++ b/drivers/video/rockchip/rga3/include/rga_drv.h
@@ -49,6 +49,7 @@
 #include <linux/iommu.h>
 #include <linux/iova.h>
 #include <linux/dma-iommu.h>
+#include <linux/pagemap.h>
 
 #ifdef CONFIG_DMABUF_CACHE
 #include <linux/dma-buf-cache.h>